/Engine/Source/Runtime/Engine/Classes/GameFramework/Actor.h
Draw important Actor variables on canvas. HUD will callDisplayDebug()on the current ViewTarget when the ShowDebug exec is used
virtual void DisplayDebug ( class [UCanvas](API\Runtime\Engine\Engine\UCanvas) * Canvas, const class [FDebugDisplayInfo](API\Runtime\Engine\FDebugDisplayInfo) & DebugDisplay, float & YL, float & YPos )